name 2 fact families that have only 2 equations
I'm not sure what you are asking.
Since I am not familiar with "fact families," I searched Google under the key words "'fact families' math" to get these possible sources:
http://www.mathcats.com/explore/factfamilycards.html
(Broken Link Removed)
http://www.theschoolbell.com/Links/math/number_families/main/index.html
http://www.geocities.com/ljacoby_2000/math.html
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.
To find two fact families that have only two equations, we need to understand what a fact family is. In mathematics, a fact family consists of a set of related addition and subtraction equations that involve the same numbers. The equations in a fact family are related because the numbers can be rearranged to form different equations.
Let's consider the number set {2, 3, 5} as an example. A fact family can be formed using these numbers by creating addition and subtraction equations. Here are two fact families that have only two equations:
Fact Family 1:
Equation 1: 2 + 3 = 5
Equation 2: 3 + 2 = 5
In this fact family, both equations involve the numbers 2, 3, and 5. By rearranging the numbers, we can create Equation 2.
Fact Family 2:
Equation 1: 5 - 3 = 2
Equation 2: 5 - 2 = 3
In this fact family, both equations involve the numbers 2, 3, and 5, just like in Fact Family 1. However, in this case, we have subtraction equations instead of addition equations.
So, these are two fact families that have only two equations. Remember, fact families can be created using any set of numbers, and the number of equations in a fact family can vary depending on the numbers chosen.